Use of satellite data (presentation, 2001)
Article published on June 2002
last modification on 21 June 2007
Presentation of Elisabeth Gérard during the ALATNET training course on Data Assimilation in Gourdon, 11-22 June 2001.
Contents :
- 1. Influence of satellite data in NWP
- TEMP, SATOB, SSM/I, ATOVS
- ARPEGE grid
- Illustration of the OSEs
- Short range in Northern Hemisphere
- Medium range
- Principle of remote sensing
- Active remote sensing
- Satellite picture
- Radio occultation geometry
- Passive remote sensing
- Solar Backscatter Ultraviolet Spectral Radiometer
- Information content
- Radiative transfer equation
- Information content
- Problems due to complex H
- Bias correction & contamination
- Use of preprocessed ATOVS data at Météo-France
- Compression of the data with future instruments
- DRM method
- SVD method
- Iterative method
- Jacobian method
- Illustration for IASI
- IASI on Metop
- Remote sounding from IASI
- Midlatitudes - T
- Accuracy / No. of channels
- Vert. resolution / No. of channels
- Channel selection - Midlatitudes
- Statistics on 518 SODA profiles